Microsoft has come out with a graphics hotfix that may solve some of the Kotor problems. I don't know for sure about that, but here is the link if you want to try it. This is apparently one of the fixes that's going to come out in Vista's SP1 sometime this year. It is apparently not yet available on Windows Update.

From MST3K's spoof of "Hercules Unchained"--heard as Roman medic soldiers carry off an unconscious Greek Hercules on a 1950's Army green canvas stretcher: "Hi, we're IX-I-I. Did somebody dial IX-I-I?"